/*
 *所有关于Nyz_Students类的业务代码应在此处编写
*可使用repository.调用常用方法，获取EF/Dapper等信息
*如果需要事务请使用repository.DbContextBeginTransaction
*也可使用DBServerProvider.手动获取数据库相关信息
*用户信息、权限、角色等使用UserContext.Current操作
*Nyz_StudentsService对增、删、改查、导入、导出、审核业务代码扩展参照ServiceFunFilter
*/
using VOL.Core.BaseProvider;
using VOL.Core.Extensions.AutofacManager;
using VOL.Entity.DomainModels;
using System.Linq;
using VOL.Core.Utilities;
using System.Linq.Expressions;
using VOL.Core.Extensions;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.AspNetCore.Http;
using Students.IRepositories;
using System.Net;

namespace Students.Services
{
    public partial class Nyz_StudentsService
    {
        private readonly IHttpContextAccessor _httpContextAccessor;
        private readonly INyz_StudentsRepository _repository;//访问数据库

        [ActivatorUtilitiesConstructor]
        public Nyz_StudentsService(
            INyz_StudentsRepository dbRepository,
            IHttpContextAccessor httpContextAccessor
            )
        : base(dbRepository)
        {
            _httpContextAccessor = httpContextAccessor;
            _repository = dbRepository;
            //多租户会用到这init代码，其他情况可以不用
            //base.Init(dbRepository);
        }

        public override PageGridData<Nyz_Students> GetPageData(PageDataOptions options)
        {
            return base.GetPageData(options);
        }

        public override WebResponseContent Add(SaveModel saveDataModel)
        {

            WebResponseContent webResponse = new WebResponseContent();
            AddOnExecuting = (Nyz_Students student, object list) =>
            {
                var number= GenerateOrderNumber();
                if(!repository.Exists(x=>x.StudentNo==number))
                {
                    student.StudentNo = number;
                }
                else
                {
                    return webResponse.Error("单号重复请重新填写");
                }
               
               return webResponse.OK();
            };

            return base.Add(saveDataModel);
        }
        // 默认的单号生成方法
        public static string GenerateOrderNumber()
        {
            // 格式: 前缀(2字母) + 年月日 + 4位随机数
            string prefix = "WAIWEI"; // 可以根据需要修改前缀
            string datePart = DateTime.Now.ToString("yyyyMMdd");
            //string randomPart = new Random().Next(1000, 9999).ToString();
            int currentSequence = 0;
            currentSequence++; // 递增序列号
            return $"{prefix}{datePart}{currentSequence.ToString().PadLeft(4, '0')}";
        }
    }

}
